Lock-setting gage.



' H. L'. COOPER.

LOCK SETTING GAGE.

A.rI'P LIOA'.IIION FILED $1113.16, 1911.

996,597. Patented June 27, 1911.

2 SHEETS-SHEET 1.

H. L. COOPER.

LOCK SETTING GAGE.

12211101111011 FILED P1113118, 1911.

996,597. v Patented June 27, 1911-.

8 BHEETS8HEET 2.

TEE- N 1 41 4a 6 g 42 I 1 31/ 4 (04am 1 1 1 HARRY L. COOPER, 0F ALBANY,OREGON.

LOCK-SETTING- GAGE.

Specification of Letters Patent.

Application filed February 16, 1911.

Patented June 2'7, 1911.

Serial No. 608,924.

To all whom it may concern:

Be it known that I, HARRY L. Coornn, a citizen of the United States,residing at Al bany, in the county of Linn and State of Oregon, haveinvented certain new and useful Improvements in Lock-Setting Gages; andI do declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates to improvements in setting gages for mortiselocks. V

One object-of the invention is to provide a gage of this characterhaving an improved construction and arrangement of adjusting mechanismwhereby the same may be adjusted to fit doors of different widths.

Another object is to provide a gage having an improved mortise markingmechanism and adjustable means for marking the places for the knob andkey holes.

\Vith these and other objects in view, the

' invention consists of certain novel features of construction,combination and arrangement of parts as will be more fully described andparticularly pointed out in the appended claims.

In the accompanying drawings: Figure 1 is a perspective view of myimproved gage; Fig. 2 is a similar view looking toward the opposite sideof the same from that shown 111 Fig. 1; Fig. 3 is a verticallongitudinal sec tional view of the same; Fig. 4 is a hori- -zontalsectional View, on a plane cutting through the handle and the flanges bywhich the shank is secured to one of the door engaging plates; Fig. 5 isa detail perspective 'view of the mortise marking plate; Fig. 6 is asimilar view of one of the knob and key hole marking bars.

Referring more particularly to the drawings, 1 denotes thebody portionof the gage, preferably formed from a sheet metal plate bent or foldedupon itself' midway between its edges to form a housing 2 and then bentlaterally in opposite directions to form door engaging plates 3.

Riveted or otherwise rigidly secured to the outer side of the plates 3is a tubular stem or shank 4 with which is engaged a suitable handle 5.In one side of the shank 4 is formed a notch with which is engaged theinner end of a set screw 6 arranged in the handle whereby the latter issecured to the shank. The housing 2 is notched to receive the shank 4and in the plates 3 is formed an opening which communicateswith theinner end of the tubular shank as shown.

Arranged on one of the plates 3 is a right angularly formed gage plate7, adjustably secured to the outer side of one of the plates 3 by bolts8 which pass through the plate 3 and through transverse slots 9 formedin the plate 7. The bolts 8 are provided with washers 10 and thumb nuts11 whereby the gage plate is secured in it's adjusted positions. By thusarranging the plate 7 the same may be adjusted to permit the use of thegage on doors of different thickness.

Slidably engaged with the housing 2 is a mortise marking plate 12 havingformed on its outer edge a series of pointed studs 13, spaced at equaldistances apart and adapted to be forced into the edge of the door tomark the centers for the holes to be bored for forming the mortise forthe lock. The plate 12 has secured thereto a stem 14 which slidablyengages the tubular shank of the housing 2 and projects a suitabledistance beyond the outer end of the same and through the end of thehandle 5. Arranged in the stem 14 near its outer end is a transversestop pin 15 with which is engaged a washer 16. On the stem between thewasher 16 and the outer end of the shank 4 is arranged a coiled spring17 the pressure of which is exerted to retract and to yieldingly holdthe marking plate 12 in a retracted position.

On the other side of the right angular plate 7 are adjustably securedknob and key hole marking bars 18 having formed in their inner endslongitudinal slots 19 with which are engaged fastening bolts 20 securedin the side of the plate 7 and having on their threaded outer ends thumbnuts 21 whereby the bars are securely fastened in their adjustedpositions. In the outer ends of the bars 18 are formed holes 22 throughwhich are adapted to be projected marking studs 23, fixed in the outerends of the flat leaf springs 24 which are riveted or otherwise rigidlysecured to the outer ends of the bars as shown, and normally hold thestuds in a retracted position.

In the operation of the gage the thickness of the door is firstobtained. The gage plate 7 is then set or spaced from the marking plate12 to a distance equal to one half the thickness of the door so thatwhen the device is engaged with the door with the door.

edge of the gage plate against one side thereof the marking plate willbe exactly in line with the center of the edge of the \Vhen in thisposition a slight tap with a hammer or other instrument on theprojecting end of the stem will drive the studs 13 into the edge of thedoor thus marking the centers for the holes to be bored for cutting themortise. For marking the positions for boring the knob and key holes,the distance from the edge of the lock to the center of the knob shankhole and key hole therein is measured and the bars 18 adjusted to thisdistance whereupon when the device is engaged With the edge of the doorto form the mortise the studs 23 in the outer ends of the springs 24 aretapped lightly and thus projected through the holes 22 in the outer endsof the bars and into engagement with the side of the door thus markingthe places for the knob and key holes.

From the foregoing description, taken in connection with theaccompanying drawings, the construction and operation of the inventionwill be readily understood Without requiring a more extendedexplanation. Various changes in the form, proportion and the minordetails of construction may be resorted to without departing from theprinciple or sacrificing any of the advantages of this invention, asdefined in the appended claims.

Having thus described my invention what I claim is l. A lock settinggage, comprising a body portion consisting of a housing, having rightangular door engaging plates, a gage plate adjustably secured to one ofsaid door engaging plates, a mortise marking plate slidably engagedwit-h said housing, and means carried by the gage plate to gage the knoband key holes in the door.

2. A lock setting gage, comprising a body portion consisting of ahousing having right angularly formed door engaging plates, a tubularhandle shank secured to said housing, a handle engaged with said shank,a marking plate slidably mounted in said housing, a stem on said platesaid stem having a sliding engagement with said handle shank, a springto normally hold said marking plate in a retracted position, studsarranged on said plate and adapted to be driven into the edge of thedoor when the plate is projected and a gage plate adjustably secured toone of the door engaging plates.

3. A look setting gage, comprising a body portion consisting of ahousing having right angularly formed door engaging plates,

a tubular handle shank secured to said housing, a handle engaged withsaid shank, a marking plate slidably mounted in said housing, a stem 011said plate said stem having a sliding engagement with said handle shank,a spring to normally hold said marking plate in a retracted position,studs arranged on said plate and adapted to be driven into the edge ofthe door when the plate is projected, a gage plate adjustably secured toone of the door engaging plates, and adjustable means carried by thegage plate to gage the knob and key holes of the door. 4. A lock settinggage, comprising a body portion consisting of a housing having rightangularly formed door engaging plates, a tubular handle shank secured tosaid housing, a handle engaged with said shank, a marking plate slidablymounted in said housing, a stem on said plate said stem having a slidingengagement with said handle shank, a spring to normally hold saidmarking plate in a retracted position, studs arranged on said plate andadapted to be driven into the edge of the door when the plate isprojected, a gage plate adjustably secured to one of the door engagingplates, knob and key hole gaging bars having slotted inner ends andapertured outer ends, bolts arranged in said gage plate and adapted toengage the slotted inner ends of said bars, clamping nuts arranged onsaid bolts whereby said bars are fastened in their adjusted posit-ionsand spring retracted studs adapted to be driven through the aperturedouter ends of said bars tovmark the places for the knob and key holes ofthe door.

5. A lock gage comprising a body portion formed from a sheet metal platebent upon itself to form a housing and having its edges bent at rightangles to form door engaging plates, a tubular handle shank secured tosaid body portion, a handle secured thereto, a marking plate slidablymounted in said housing, a stem secured to said plate and having asliding engagement with said tubular handle shank, a spring arranged onsaid stem to hold said plate in a retracted position, a right angulargage plate having an adjustable engagement with one of said doorengaging plates whereby the position of said marking plate is determinedand adjustable means carried by the gage plate for gaging the knob andkey holes of the door.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

HARRY Looornn.

lVitnesscs:

C. C. BRYANT, A. M. CHASE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

